<!DOCTYPE html>
<style>
#filtered {
  opacity: 0.99;
  filter: url(#myFilter);
}
</style>
<svg>
  <filter id='myFilter'>
    <feColorMatrix type='hueRotate' values='90'/>
  </filter>
  <rect id='filtered' fill='red' width='100' height='100'/>
</svg>
